TY  - RPRT
TI  - Manned interplanetary mission modes for nuclear propulsion systems.
AU  - Callies, G. M.
AU  - Cannon, G. W.
AU  - Chovit, A. R.
AU  - Simmons, L. D.
PY  - 1968
UR  - https://ntrs.nasa.gov/citations/19680052813
ID  - 19680052813
ER  -